Hydraulic-pressure and time indicator.



C. D. HELM.

HYDRAULIC PRESSURE AND TIME INDICATOR.

APPLlCATlON FILED FEB. 9,1918.

4 Patented Dec. 24, 1918.

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HYDRAULIC PRESSURE AND TIME INDICATOR.

APPLICATION FILED FEB. 9, 1918,

1 88,886 Patented Dec. 24, 1918.

2 SHEETS-SHEE T 2.

UNITED sTATEs PATENT OFFICE.

CLYDE D. HELM OF. FORT WORTH, TEXAS, ASSIGNOB TO OIL MILL MACHINERY &MANUFACTURING COMPANY, OF FORT WORTH, TEXAS, A CORPORATION OF TEXAS.

HYDRAULIC-PRESSURE AND TIME INDICATOR.

Application filed February 9, 1918.

To all whom z'tmay concern:

Be it known that I, CLYDE D.- HELM, a citizen oftheUnitedStates,residing at Fort WVorth, in the county of Tarrant and State of Texas,have invented certain new and useful Improvements in Hydraulic-Pressureand Time Indicators, of which the following is a specification.

My invention-relates.- to indicators, and more particularly-t0indicators for recording the timeswhen hydraulic cylinders are inoperation andgto indicate when the cylin: ders commence work or reachthe required pressure and which will indicate when the pressure in thecylinders goes below. the required pressure, The device is particularlyuseful, in cotton seed oil mills to prevent waste of oil. If a pressstops working, as when through the carelessness of an employee, oil willwaste. The object of this invention is to provide a simple device whichwillinstantly indicate the time when the required pressure ceases and torecord the time when the press stops, and when it starts. Other objectsand-advantages will be fully explained in the following description andthe invention will be more particularly pointed out in the claims.

Reference is had to the accompanying drawings which form a part of thisapplication.

Figure 1. is a perspective view of the indicator. Fig. 2 is an enlargedinterior elevation, showing the relative positions of the operatingparts. Fig. 3is aplan view of the interior mechanism. Fig. 4 is a detailView of the main operating pulley. Fig. 5 is a detail plan view of therecording dial and;

the release therefor. Fig. 6 is a side elevation of the recording dial.Fig. 7 is adetail View, showing the recording strip which is fedfromthe-indicator during operation.

Similar characters of reference are used to indicate the same partsthroughout the several views.

The indicator herein set forth is a time operated indicator, a clockbeing inclosed in a casing l which is attached to the main casing 2. Theclock is provided witha projecting shaft 3 which is connected to theshaft4 by clutch jaws 5. The operating mechanism is provided with aframe composed of two members. One frame member has arms6 at the upperside and at the lower side, the frame substantially I-shaped, and thisframe Specification of Letters Patent.

Patented Dec. 24, 1918.

Serial No. 216,157.

place by gravity. The frame members are provided withopen bearings 15and a gravity pulley16 cooperates with the main pulley 10 for feedingthe strip 12. When the clock mechanism drives the pulley 10, the pulley16 clamps the strip 12 thereon by gravity and in this manner the strip12 is fed forward off the drum 13. The strip 12 is provided with figuresindicating the hours and minutes and marks for indicating the min utesand the hours. Therecording strip12 is timed with the clock-when thedevice is started or set to work. The recording strip will. be fedregularly forward whether any record is made or not. When there is norecordmade, this shows that the press is not being operated. Adialiwheel punch 11' is provided for making records on the strip 12. Thewheel is provided with radial teeth on the periphery thereof which willperforatethe strip 12 for the purpose of making records thereon. Thiswheel will be operated by friction and by the strip 12 pulling on theteeth of the wheel. Thewheel 11 is carried in spring controlled bearingarms 17 which are rigid with a shaft 18 which is, journaled in upperarms 6 and 8. A spring 19 is coiled about one part of the shaft 18 andis caught on the arm 6.at one endand the other end of the spring bearsdownon the bearing arms 17. In this manner. the wheel 11. is made toperforate the strip 12. YVorking connection of the Wheel 11 and thepressure in the hydraulic cylinders is made the release bar 25 and thuslift the wheel 11 out of contact with the strip 12. The release bar isprovided with a pivot shaft 26 which is provided with bearings 27 in thearms 6 and 8, the ends of the shaft being pointed to engage thebearings'27. The bar 25 is bifurcated to receive the wheel 11 and isprovided with a cross bar 28 for lifting the springcontrolled arms 17.When the screw 24: bears down on the release bar 25, this bar will liftthe wheel 11 out of contact with the strip 12 by means of the bar 28.When the pressure is kept up to the required amount in the hydrauliccylinder, the pressure, acting through the pipe 20 and the curved pipe21 will tend to expand or straighten out and thus lift the screw 24 offthe release bar 25. The spring 19 will instantly throw the wheel 11 downon the strip 12 and thus commence perforating the strip to indicate thatthe hydraulic press is operating with the required pressure. When thehydraulic press is not operating, there will be no pressure in the pipe21 and this pipe will go back to normal position and press down on thescrew 24 and thus cause the bar 25 to release the wheel 11 from thestrip 12. The pulley 10 has an annular peripheral groove 29 so that theteeth of wheel 11 will not strip anything eX- cept the paper strip 12.The shaft A of wheel 10 is provided with ball bearings which areinclosed in the cups 30.

For convenience in attending to the interior parts, a door 31 is hingedto the casing at 32 and provided with a knob 32.

What I claim, is,

1. A pressure indicator and recorder comprising a recording strip, atime-actuated mechanism for feeding said strip forward continually, arecording dial for perforating said strip when the pressure is on, andoperative connection of said dial and the cylinder whose pressure is tobe recorded, including a bent pipe automatically eXpansiblc by thepressure element carried therein, for permitting said dial to perforatesaid strip when the pressure is on and said pipe being automaticallycontracted for releasing said dial from said strip when the pressure insaid cylinder ceases.

2. A pressure indicator and recorder co1nprising a record strip, atime-actu ated mechanism for feeding said strip forward continually, a.recording dial for perforating said strip standing normally out ofengagement of strip, and operative connection of said dial with thecylinder whose pressure is to be indicated and recorded for causing saiddial to engage and perforate said strip when the required pressure is inthe cylinder and for disengaging said dial from said strip when thepressurein said cylinder is insuiiicient'or has ceased.

3. A pressure indicator and recorder comprising a record strip, atimemctuated mechcylinder is insufficient or ceases.

4. A pressure indicator and recorder comprising a strip containing marksindicating hours and minutes, a time-actuated mechanism for feeding saidstrip forward continually, a recording dial standing normally out ofengagement with said strip, and operative connections of said dial withthe cylinder whose pressure is to be indicated and recorded including abent pipe having communication with the interior of said cylinder and aregulating screw carried by said pipe and a controlling device to beengaged by said screw for causing said dial to engage said strip andperforate the same when the required pressure is in said cylinder and todisengage said dial from said strip when the pressure in said cylinderis insufiicient or ceases. v

5. A pressure indicator and recorder comprising a record strip, atime-actuated mechanism for feeding said strip forward continually, arecording dial standing normally out of engagement with said strip, aspring for causing positive action of said dial, and operativeconnections of said dial with the interior of the cylinder whosepressure is to be indicated and recorded including a bent pipe andcontrolling devices causing said dial to engage said strip when therequired pressure is in said cylinder and for disengaging said stripwhen the pressure in said cylinder is insufficient or ceases.

6. A pressure indicator and recorder comprising a record strip, atime-actuated mech anism for feeding said strip forward continually,including a bearing wheel having an annular groove therein andsupporting 5 said strip and a. gravity-actuated wheel hearing on saidstrip, a recording dial standing normally out of engagement with saidstrip, operative connection of said dial with the cylinder whosepressure is to'be indicated 12 and recorded including a bent pipecommunicating with the interior of said cylinder, a spring for causingpositive action of said dial, and means controlled by said bent i e forcausin said dial to en a c said 7, A pressure indicator'and recordercomprising a record strip, a time-actuated mechbe recorded and indicatedfor causing said anism for feeding said strip continually fordial toengage said strip when the required ward, including a pulley having anannular pressure is in said cylinder and to disengage peripheral groovesupporting said strip and said dial from said strip when the required 5a gravity actuated idler cooperating therepressure ceases and when thereis no pres- 15 with, a toothed dial adapted to make persure in saidcylinder. forations in said strip by striking there- In testimonywhereof, I set my hand, this through into said grooves, and means opera-31st day of January, 1918. tively connected with said dial and with the10 interior of the cylinder whose pressure is to CLYDE D. HELM.

Copies of thin patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, .D. G.

